I've successfully scaled the RIGHT vector of a cylindrical camera, but it does
strange things to the zoom factor. This is one of those lengthy tutorials I'm
working on for my cyclopedia, but I don't expect it to get done for some time. Good
luck

Margus Ramst wrote:

> As many have probably discovered, thee are scenes in which it is extremely
> difficult to position & adjust the camera. I am currently working at just such a
> case: a view of a landscape, requiring a large camera angle to convey scale -
> but there is also an important object close to the camera, near the bottom edge
> of the picture.
> Now, this is a bad situation: if I use the standard camera, which maps the image
> to a plane, the image gets stretched near the edges.
> If I use panoramic or any other non-planar mapping with a fixed viewpoint,
> straight lines get bent - and very much so when camera angles are large.
> A third type is the cylindrical camera with non-fixed viewpoint. But while this
> eliminates distortion of straight lines, the view is orthographic in one
> direction.
> Neither of these really do what I need.
> I'm wondering if an ellipsoidal projection might help overcome this problem.
> This camera type should offer control over the eccentricity of the ellipsoid,
> giving projections ranging from cylindrical to spherical (as in Mike's patch).
> Somewhere in between there might be an acceptable solution to the pathological
> case described above.
> Sorry 'bout the rambling. Comments?
>
> Margus

--

Josh English
eng### [at] spiritonecom
icq 1946299
"Stress is when you wake up screaming and realize you haven't fallen asleep yet."

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